A New Class of Balanced 4-PSK STTC for Two and Three Transmit Antennas

International audienceA new class of 4-PSK Space Time Trellis Codes (STTC) for 2 and 3 transmit antennas is proposed in this paper. We call these codes Balanced STTC because they use the points of the constellation with the same probability. Comparing to known codes, these codes offer the best performance. Therefore, the systematic search for good codes can be reduced to this class. It is shown that all the best published codes are balanced. The paper presents the design of these balanced STTC and gives a complete list of the best 4-state codes. Several 16-state balanced codes for 2 and 3 transmit antennas are also given

4-PSK Balanced STTC with Two Transmit Antennas

International audienceIn this paper we introduce a new class of space-time trellis codes (STTC). We call them Balanced STTC (B-STTC) because the points of the constellation are used with the same probability. Comparing to known codes, the balanced codes offer the best performance. Therefore, the systematic search for good codes can be reduced to this class. We present here the design of the 4-PSK balanced STTC with 2 transmit antennas. A complete list of the best 4-state and several 16-state good balanced codes are also given

Design of Balanced QPSK Space-Time Trellis Codes for Several Transmit Antennas

International audienceA new class of QPSK Space Time Trellis Codes (STTC) for several transmit antennas is proposed in this paper. We call these codes Balanced STTC because they use the points of the constellation with the same probability. Comparing to known codes, these codes offer the best performance. Therefore, the systematic search for good codes can be reduced to this class. It is shown that all the best published codes are balanced. The paper presents the design of these balanced STTC and gives a complete list of the best 4-state codes for 2 transmit antennas. Several 16-state balanced codes for 2 and 3 transmit antennas are also given

4-PSK Balanced STTC with Two Transmit Antennas

International audienceIn this paper we introduce a new class of space-time trellis codes (STTC). We call them Balanced STTC (B-STTC) because the points of the constellation are used with the same probability. Comparing to known codes, the balanced codes offer the best performance. Therefore, the systematic search for good codes can be reduced to this class. We present here the design of the 4-PSK balanced STTC with 2 transmit antennas. A complete list of the best 4-state and several 16-state good balanced codes are also given

A nodal model for shape optimization of offset strip fin heat exchanger

Paper presented to the 10th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Florida, 14-16 July 2014.A methodology of a nodal model implementation for heat exchanger optimization is presented as an alternative to direct CFD-based optimization. The accuracy and the interest of the use of a nodal model in the frame of optimization process for heat exchanger geometries composed of a base pattern such as offset strip fins (OSF) geometries is detailed. Then an example of optimization of OSF profiles using the nodal model and a genetic algorithm is performed.cf201

Mardis de Tempo : ouvrir les médiathèques le dimanche (Les)

Tempo territorial est une association à but non lucratif crée en 2004. Il s\u27agit du premier réseau national des acteurs des démarches temporelles, réunit des collectivités, des organisations scientifiques, des associations, des consultants et des entreprises, des individus soucieux de faciliter la conciliation des temps personnels et professionnels. Tempo Territorial, a pour objet de favoriser l’échange, le partage, l’apprentissage, la mutualisation, la coopération, entre acteurs des démarches temporelles. Ce document rend compte des travaux menés par l\u27association, et propose un examen des conditions favorables à l’ouverture de certaines bibliothèques le dimanche

Introduction

Cet ouvrage est le résultat d’une journée d’étude suivie d’un colloque qui se sont tenus à l’université de Bretagne occidentale (UBO) à Brest le 16 mars 2013 et les 19 et 20 juin 2014. Fondé sur un projet scientifique élaboré par François Prigent qui a consacré sa thèse aux réseaux du parti socialiste en Bretagne au XXe siècle, ces trois journées ont été organisées conjointement par l’association Maitron Bretagne (AMB), une association régionale contribuant au Dictionnaire biographique du mou..

Optimised directed decision frequency synchronization systems in presence of gaussian noise ans oscillator phase noise

International audienc

Design of Balanced QPSK Space-Time Trellis Codes for Several Transmit Antennas

International audienceA new class of QPSK Space Time Trellis Codes (STTC) for several transmit antennas is proposed in this paper. We call these codes Balanced STTC because they use the points of the constellation with the same probability. Comparing to known codes, these codes offer the best performance. Therefore, the systematic search for good codes can be reduced to this class. It is shown that all the best published codes are balanced. The paper presents the design of these balanced STTC and gives a complete list of the best 4-state codes for 2 transmit antennas. Several 16-state balanced codes for 2 and 3 transmit antennas are also given

Optimized directed decision frequency synchronization systems in presence of Gaussian noise and oscillator phase noise

Publication in the conference proceedings of EUSIPCO, Toulouse, France, 200